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參數(shù)資料
| 型號： | XRT73L04 |
| 廠商： | Exar Corporation |
| 英文描述： | 4 Channel E3/DS3/STS-1 Line Interface Unit(4通道 E3/DS3/STS-1線接口單元) |
| 中文描述： | 4頻道E3/DS3/STS-1線路接口單元（4通道E3/DS3/STS-1線接口單元） |
| 文件頁數(shù)： | 30/62頁 |
| 文件大?。?/td> | 781K |
| 代理商： | XRT73L04 |
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XRT73L04
4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT
REV. P1.0.5
á
PRELIMINARY
26
2.0
Figure 10 indicates that the Transmit Section within
each Channel of the XRT73L04 consists of the follow-
ing blocks:
Transmit Logic Block
TxClk(n) Duty Cycle Adjust Block
HDB3/(B3ZS) Encoder
Pulse Shaping Block
In general, the purpose of the Transmit Section is to
take TTL/CMOS level data from the terminal equip-
ment and encode it into a format such that it can:
1.
Be efficiently transmitted over coaxial cable at E3,
DS3, or STS-1 data rates.
THE TRANSMIT SECTION
2.
Be reliably received by the Remote Terminal
Equipment at the other end of the E3, DS3, or
STS-1 data link.
3.
Comply with the applicable pulse template
requirements.
2.1
T
HE
T
RANSMIT
L
OGIC
B
LOCK
The purpose of the Transmit Logic Block is to accept
either Dual-Rail or Single-Rail (e.g., a binary data
stream) TTL/CMOS level data and timing information
from the Terminal Equipment.
2.1.1
Accepting Dual-Rail Data from the Termi-
nal Equipment
Whenever the XRT73L04 accepts Dual-Rail data
from the Terminal Equipment, it does so via the fol-
lowing input signals:
TPData(n)
TNData(n)
TxClk(n)
Figure 11 illustrates the typical interface for the trans-
mission of data in a Dual-Rail Format between the
Terminal Equipment and the Transmit Section of the
XRT73L04.
The manner that the LIU handles Dual-Rail data is
described below and illustrated in Figure 12. The
Transmit Section (of a Channel) typically samples the
data on the TPData(n) and TNData(n) input pins on
the falling edge of TxClk(n).
STS-1
1
0
T
ABLE
4: S
ELECTING
THE
D
ATA
R
ATE
FOR
C
HANNEL
(
N
)
VIA
THE
STS-1/DS3_C
H
(
N
)
AND
THE
E3_C
H
(
N
)
BIT
-
FIELDS
WITHIN
THE
A
PPROPRIATE
C
OMMAND
R
EGISTER
(HOST M
ODE
)
S
ELECTED
D
ATA
R
ATE
STS-1/DS3_(
N
)
(D3)
E3_C
H
(
N
)
(D2)
F
IGURE
11. T
HE
TYPICAL
INTERFACE
FOR
THE
T
RANSMISSION
OF
D
ATA
IN
A
D
UAL
-R
AIL
F
OR
-
MAT
FROM
THE
T
RANSMITTING
T
ERMINAL
E
QUIPMENT
TO
THE
T
RANSMIT
S
ECTION
OF
A
CHANNEL
Terminal
Equipment
(E3/DS3 or STS-1
Framer)
Exar E3/DS3/STS-1 LIU
Transmit
Logic
Block
TxPOS
TxNEG
TxLineClk
TPData
TNData
TxClk
相關PDF資料 |
PDF描述 |
|---|---|
| XRT73L06 | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L06IB | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC00A | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC00AIV | E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73LC03A | 3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| XRT73L04A | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04AIV | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04B | 制造商:EXAR 制造商全稱:EXAR 功能描述:4 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT |
| XRT73L04BES | 功能描述:網(wǎng)絡控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT73L04BIV | 功能描述:外圍驅動器與原件 - PCI RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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